Owner's Manual
Page 156
... contain oxygenates such as ''regular'' in high altitude areas that optimize the performance of your vehicle sometimes knocks lightly. The American Automobile Manufacturers Association (AAMA) issued a gasoline specification to provide information on the recommended octane fuel, see your dealer or a qualified service technician to prevent any aftermarket products to your fuel...
... contain oxygenates such as ''regular'' in high altitude areas that optimize the performance of your vehicle sometimes knocks lightly. The American Automobile Manufacturers Association (AAMA) issued a gasoline specification to provide information on the recommended octane fuel, see your dealer or a qualified service technician to prevent any aftermarket products to your fuel...